Need to decide by this evening, preferably, or tomorrow morning at latest. Looking at 5 month old yellow lab pup in shelter, excellent temperament and very 'people-y', does not seem any *more* hyperactive than your average young lab, am seriously seriously interested. Puppy was an owner surrender on account of "could not be housebroken, kept peeing on the bed and other places". I *think* his neuter surgery has been since shelter intake but am not certain, if that matters How much of a"project" is this likely to be? Is a someone-sort-of-tried-to-housebreak-it-but-not-really dog tougher to housebreak than one that's totally unfamiliar with the idea? Is it likely some innate feature of the dog's personality making it difficult to learn this lesson, or is it (as shelter staff suggests) almost certainly just that the previous owners did not really get off their butts and approach the problem properly, and as long as I am diligent it should be no different than any other dog? What do you think?